Rock sizing and crushing machine



Oct. 23, 1934.

H. w. PUDAN ROCK SIZING AND CRUSHING MACHINE Filed Dec. 2, 1929 OJ m11 Q/Ogfa 26/ 9 s Q., PMK,

/NVENTo/e Patented ct. 23, 1934 PATENroF-FICE N ROCK slznvo AND CRUSHING` MACHINE l Herbert watmoughruaan, Los Angeles, Calif. i Applicaties December" V2, regafseriaiNo. 411,004

` 4 Claims. felices-531) i This invention relates to what arefcommonly called.grizz1ies and rock Crushers. Grizzlies thatsize the rock and rock crushersthatreduce it. The object of my invention is to combine the two functions in one machine and'to Aalso provide a` crusher system that will break to `any rei quired fineness. These things cannot easily be done with existing machinery. There are existing today, what is known as the cone crusher. These machines receive quite `large rock` and deliver a product as small as one inch in general dimensions. They themselves are quite a big advance on. previous types. However, they are large and heavy for theircapacity and cannot crush near as `ne as is desired.

My invention introduces a novel principle in crushing. My method of sizing `in advance of crushing is also new andeffective.' Ican apply this new principle to the existingtype of .jaw

. crusher, taking a crusher that receives say 8f' and reduces it downto 3 I can so modifyA the crusher that its` final product will be 1/2 in general dimensions. I do .this by introducing supplementary breakers, made of suitable material, into the pinching spaceformedby the jaws of the' crusher. Thus, .supposing that Vthe jaw crusher closes to a 3'. .clearance or pinching space and that I occupy two inches of this space with a free to move crusher plate made of `suitable material, and that it remains in about the center, then all material that is crushed by the` crusher must be reduced tol/2" or` lessto get by the now narrowed and divided pinching space. Thisreduction iseiected by the jaws of the rock crusher and the intermediate breaking plate. i lBy using several supplementary or intermediate breaking or crushing plates, a stationary: back or frame, and one power operated moving jaw;Y a rock breaker of great practical value `is arrived at. Each crushing plate transmits the crushing force to the next plate by means of the material being crushed, the power operated jaw supplying the force for all the crushing.v The neness of the crushed product depends on the number `ci? supplementary crushing plates andtheir spacing. When the plates are a considerable distanceapart I have a coarse crusher of great capacity. i When the plates are closer the'product coming thru :lis smaller. When the plates are still closer spaced I arrive at-ne crushing and still may have great capacity. The material to be crushed is intro. duced at 'the top of the machine andfalls down between the stationary frame, between each plate; and the power supplying jaw. To prevent bypassing of oversize, eachplate is provided with distance maintaining lugs; The lower part of the` plates can be made thicker than the upper' part, in this way the pinching space at the bottom is a little less than at the top, thisarrangement also helps to prevent lay-passing. The distance lugs permit the free crushing movement of the system but otherwise maintain the proper spacing of theplates. To prevent breakage that might be caused by the entrance of tramp iron,` theoperating jaw and plates are protected with cushioning springs that have ample resistance to crush the material intended to be reduced but will spring back rather than break the machine. To understand this springfaction the stationary jaw can be considered as the front ofthe machine andthe movable jaw and its power operating mechanism can be considered theback part of the machine. If the front part and the back part are all one solid frame as is usual injawtype Crushers, then therecah be no yielding, ifthe piece between the jaws is too hard to be crushed, the `crusher 1 stops `or breaks.` In my' crusher the frame is `dvidedlor articulated into a `front part carrying the stationary jaw and a back part ycarrying `the movable jawand its mechanism. The front `part and the back partof the frame are held together by powerful springs which are rigid` 4under ordinary conditions vof operation but yield when the `crusher encounters apiece that it cannot break.'` The division `of the frameis a matter? of design andcan be made near the stationary jaw or preferably right back of the operatingjaw. An almost identical arrangement is now in use on crushing rolls.

"`IIaving vnow` described the crusher I will proceed .to explain the sizer or grizzly. By giving aslope sufficient for gravity to act, to the toppart of the supplementary crushing plates I can use the crusheras a grizzly. If I slope both ways, the material to be sized can be fed on the highest part; The crusher being in operation, the plates will be in movement and will assist the flow of the material. The coarse rock that cannot enter between the plates will'pass over their top to a grizzly and crusher that can accommodate it. Thener yrock will' fall between the plates and be immediately crushed. As before mentioned the larger` rock has passed to a second combined grizzly andi crusher. `Material that cannot enter this second crusl'xer.canpass to a third. In this manner I 1`prov-ijdr'e'afsizing and crushing `system thatrnoreor less instantly takes care of the ma?` terial to be reduced'. Moving grizzliesare known tobelth'e most eiffectivama crusher such as I have explainedhas a ".glalif capacity on'all sizes.` Sizing. efficiently meahsa minimumuof power for crushing.` Ajlelowf` the strictly grizzly types of crusher can beplaced those adapted to merely.

`reduce the feed they `receive from above. .l In this manner a very fine nalproduct can be quickly arrived at.` l A i The `whole mechanism is aifree running ma-f chine, the crusher and grizzly are one` and are in rapid movement, between one plate and another is a free vertical space, it follows that neither the grizzly or crusher are subject to clogging.

Figure l is a partial elevation and cross-section oi an ordinary jaw crusher modied by my invention.

Figure 2 is a cross-section of the combined grizzly plate crusher.

Figure 3 is a longitudinal part section of the same.

Figure 4 is a cross-section of the non-.grizzly type of plate crusher.

Figure 5 is an elevation and side view showing diagrammatically a sizing and crushing arrangement.

Figure 6 is a front view of the same.

In Figure 1; the frame is represented by I; 2, is the xed jaw;- 3, the movable jaw; 4, one of the toggles; 5, a supplementary crushing plate; 6, the pinching space between the fixed jaw and the movable jaw; 7, shows the crushed material leaving the Crusher. In the other gures the numbers specify as follows:-

8, represents the grizzly type of Crusher; 9, the top of thegrizzly; 10, the crushing plate; 11, the .crushed material leaving the Crusher; 12, the pinching space between the plates; 13, the movable jaw; 14, the eccentrics; 15, the shafts; 16, the pulley; 17, gears connecting the two shafts; 18, the toggles vdriving the movable jaw; 19, the chute plates; 20, the crusher plate carrying bolt; 21, spacing lugs on the plates; 22, rubber cushions between the plates; 23, the protecting hood over the plate holding bolt and the rubber cushions; 24, safety spring bolts; 25, safety springs that operate should tramp iron enter the system; 26, second crusher in Figure 5; 27, second grizzly in Figure 6; 28, third crusher in Figure 5; 29, third grizzly in Figure 6; 30, frame of Crusher in Figure 4; 31, entrance hopper for material, Figure 4; 32, suspension lugs for plates 10 of Figure 4.

The operation of the machine as shown in Figure 1 is as follows:-

Rock to be crushed is dumped into the top of the Crusher 1, between the xed head 2 and the movable jaw 3. As it is passed down it gets smaller and finally arrives above the supplementary crushing plate 5, in the pinching space 6, entering between the jaw, the crushing plate, and the back head, it is crushed to relative neness and passes out at 7.

Figures 2 and 3, illustrate the construction of the combined grizzly and plate crusher 8. Figures 5 and 6, show diagrammatically one arrangement for sizing and crushing. Referring jointly to Figures 2--3-5 and 6, rock to be sized and crushed is allowed to fall on top of the crusher 8, and onto the grizzly 9. It slides down on the top edges of the crushing plates l0, some of it enters between the plates V and is crushed, passing out at 11, having been subjected to the action of the pinching spaces 12. The plates being in rapid movement, caused by the primary motion of the jaw 13, thetoggles 18, eccentrics 14, shafts 15, gears 17, and pulley 16, not only crush the rock which gets in between them but size the material on the grizzly with 100% eiciency and pass the rock too big for this particular Crusher over the chute plates 19, to a second machine 26, with it its wider spaced grizzly 27, and plates 10, thence to a third machine 28, with its still wider spaced grizzly 29, and plates 10. This last grizzly and Crusher completes the sizing operation as shown on the drawing but of course it can be modied to suit conditions.

The products 11, of these crushers can be more or less combined and be fed for further reduction .to plate Crushers of the type shown in Figure 4, where material can be reduced to any required neness, passing out at 11. In this crusher 31 is the feed hopper; 32, suspension lugs for the plates, placed well above the crushing part of the plate. In this type of machine there are two plate lsuspension bolts 20, therefore the feed hopper necessarily comes between them. The bolts carrying the powerful safety springs are shown at 24.

What I claim is:-

1. In a rock crushing machine of the jaw type including a movable jaw and a stationary frame, a pinching space between said jaw and the frame, supplementary crushing plates within the pinching space, said stationary frame having generally two parts, a iront part carrying a stationary jaw and a back part upon which is mounted the movable jaw and its power operating mechanism, means consisting of powerful springs for maintaining a highly resistant yet yielding connection between the stationary jaw and the power end of the frame.

2. In a rock crushing machine of the jaw type, an oscillating crushing jaw, a stationary frame, a pinching space between said jaw and the frame, supplementary crushing plates interposed within the pinching space, the uppermost edges of said plates operating as a grizzly that rejects, conveys, and directs the oversize through ports in said frame, the undersize passing between said plates to be crushed, the whole cooperating to reject the oversize and crush the undersize of the material received.

3. In a grizzly adapted for sizing material, a stationary frame, an oscillating crushing jaw, oscillating plates between the frame and the jaw, the uppermost edges of said plates operating as a grizzly that rejects, conveys, and directs the oversize through ports in said frame, the undersize passing between said plates and that subjected to the cooperative crushing action of said stationary frame, crushing jaw, and oscillating plates.

4. A series of substantially equally constructed grizzly and crushing units adapted to receive, classify, and crush the material received, by means of a differently spaced crushing adjustment for each unit, the rst and usually the highest unit of the series having the closest adjustment, the second a wider, the third still wider, other units, if required, with wider spacing; each unit is substantially a jaw Crusher having an oscillating crushing jaw, a stationary frame, a pinching space between said jaw and the frame, supplementary crushing plates interposed within the pinching space, uppermost edges of said plates operating as a grizzly that rejects, conveys, and directs the oversize through ports in said frame, the undersize passing between said plates to be crushed, the whole cooperating to crush the undersize and reject the oversize thru said ports, thence by gravity on to the upper edges of another grizzly and crushing unit of wider spacing. there to be again sized, crushed, and in part transmitted to another unit and the necessary succeeding units in order to complete the desired crushing and classification.

HERBERT WATMOUGH PUDAN. 

